my ex has filed motions that I broke our behavior order so I cannot collect his retirement benefits, what type of lawyer do I need?

If I understand what you have said correctly, your ex's motion makes no sense under Nevada law.  Presuming (without discussing) that his assertion is true, it is irrelevant to the question of ownership of property, which has nothing to do with non-economic "fault" matters.  See the discussion of all related questions posted at http://willicklawgroup.com/property-rights-and-division/. To answer the question you asked, what you need is a family law specialist with expertise in retirement benefit divisions.  It will be necessary to review all existing orders, and the current motion.  Note that you do not have a lot of time (usually ten days) to oppose such a motion.